I'm not sure it's carrier specific. I have the unlocked version and I don't have all of them available to me.
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Yes, these are the ones tried. After install on my Verizon note 8 I did not get a dual camera icon on my camera. I did not try the paid version but did try the "dual camera galaxy" and "dual camera for galaxy" exactly the ones circled above by those authors. No joy on either.
Did you do something special to get to show up?
BJB1